php 中英文混合文本截取字符串函数
下面要提供二款php 中英文混合文本截取字符串函数,这款字符串截取函数都是自于不同的cms一款是dede字符串截取函数,一款是phpcms的,现在拿来给各位使用啊。
代码如下 | 复制代码 |
function str_cut($string, $length, $dot = '...') { $strlen = strlen($string); if($strlen $string = str_replace(array(' ', '&', '"', ''', '“', '”', '—', '', '·', '…'), array(' ', '&', '"', "'", '“', '”', '—', '', '·', '…'), $string); $strcut = ''; if(strtolower(charset) == 'utf-8') { $n = $tn = $noc = 0; while($n { $t = ord($string[$n]); if($t == 9 || $t == 10 || (32 $tn = 1; $n++; $noc++; } elseif(194 $tn = 2; $n += 2; $noc += 2; } elseif(224 $tn = 3; $n += 3; $noc += 2; } elseif(240 $tn = 4; $n += 4; $noc += 2; } elseif(248 $tn = 5; $n += 5; $noc += 2; } elseif($t == 252 || $t == 253) { $tn = 6; $n += 6; $noc += 2; } else { $n++; } if($noc >= $length) break; } if($noc > $length) $n -= $tn; $strcut = substr($string, 0, $n); } else { $dotlen = strlen($dot); $maxi = $length - $dotlen - 1; for($i = 0; $i { $strcut .= ord($string[$i]) > 127 ? $string[$i].$string[++$i] : $string[$i]; } } $strcut = str_replace(array('&', '"', "'", ''), array('&', '"', ''', ''), $strcut); return $strcut.$dot; } |
方法二
//中文截取2,单字节截取模式
//如果是request的内容,必须使用这个函数
代码如下 | 复制代码 |
function cn_substrr($str,$slen,$startdd=0) { $str = cn_substr(strips教程lashes($str),$slen,$startdd); return addslashes($str); } //中文截取2,单字节截取模式 function cn_substr($str,$slen,$startdd=0) { global $cfg_soft_lang; if($cfg_soft_lang=='utf-8') { return cn_substr_utf8($str,$slen,$startdd); } $restr = ''; $c = ''; $str_len = strlen($str); if($str_len { return ''; } if($str_len { $slen = $str_len - $startdd; } $enddd = $startdd + $slen - 1; for($i=0;$i { if($startdd==0) { $restr .= $c; } else if($i > $startdd) { $restr .= $c; } if(ord($str[$i])>0x80) { if($str_len>$i+1) { $c = $str[$i].$str[$i+1]; } $i++; } else { $c = $str[$i]; } if($i >= $enddd) { if(strlen($restr)+strlen($c)>$slen) { break; } else { $restr .= $c; break; } } } return $restr; } //utf-8中文截取,单字节截取模式 function cn_substr_utf8($str, $length, $start=0) { if(strlen($str) { return ''; } preg_match_all("/./su", $str, $ar); $str = ''; $tstr = ''; //为了兼容mysql教程4.1以下版本,与数据库教程varchar一致,这里使用按字节截取 for($i=0; isset($ar[0][$i]); $i++) { if(strlen($tstr) { $tstr .= $ar[0][$i]; } else { if(strlen($str) { $str .= $ar[0][$i]; } else { break; } } } return $str; } |
上面二款字符串截取函数有一个相同点,他就是全部支持中英文混体文本,也都是判断asc码值进行区别那个是汉字,那个是中文,以及是utf8还是gbk等。

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

Convert basic data types to strings using Java's String.valueOf() function In Java development, when we need to convert basic data types to strings, a common method is to use the valueOf() function of the String class. This function can accept parameters of basic data types and return the corresponding string representation. In this article, we will explore how to use the String.valueOf() function for basic data type conversions and provide some code examples to

Method of converting char array to string: It can be achieved by assignment. Use {char a[]=" abc d\0efg ";string s=a;} syntax to let the char array directly assign a value to string, and execute the code to complete the conversion.

Replace characters (strings) in a string using Java's String.replace() function In Java, strings are immutable objects, which means that once a string object is created, its value cannot be modified. However, you may encounter situations where you need to replace certain characters or strings in a string. At this time, we can use the replace() method in Java's String class to implement string replacement. The replace() method of String class has two types:

Hello everyone, today I will share with you the basic knowledge of Java: String. Needless to say the importance of the String class, it can be said to be the most used class in our back-end development, so it is necessary to talk about it.

Use Java's String.length() function to get the length of a string. In Java programming, string is a very common data type. We often need to get the length of a string, that is, the number of characters in the string. In Java, we can use the length() function of the String class to get the length of a string. Here is a simple example code: publicclassStringLengthExample{publ

In Golang programming, byte, rune and string types are very basic and common data types. They play an important role in processing data operations such as strings and file streams. When performing these data operations, we usually need to convert them to each other, which requires mastering some conversion skills. This article will introduce the byte, rune and string type conversion techniques of Golang functions, aiming to help readers better understand these data types and be able to apply them skillfully in programming practice.

The String.toLowerCase() function is a very useful and common string processing function in Java, which can convert a string to lowercase. In this article, we will introduce how to use this function and give some related code examples. First, let's take a look at the basic syntax of the String.toLowerCase() function. It doesn't have any parameters, just call it. Here is the sample code: Stringstr="Hel

1. Understanding String1. String in JDK First, let’s take a look at the source code of the String class in the JDK. It implements many interfaces. You can see that the String class is modified by final. This means that the String class cannot be inherited and there is no subclass of String. class, so that all people using JDK use the same String class. If String is allowed to be inherited, everyone can extend String. Everyone uses different versions of String, and two different people Using the same method shows different results, which makes it impossible to develop the code. Inheritance and method overriding not only bring flexibility, but also cause many subclasses to behave differently.
